Computing-scale.



WVP. STIMPSON. COMPUTING SCALE. APPLICATION FILED NOV. 5, 1910.

Patented Oct. 20, 1914.-

IIHIHIIIIIIIII N \J a/fexi/s'fz'mg iil/mm md State of tain new and useful Improvements in Comdetachable weights.

WALTER F. STIMPSON, OF DETROIT,

nicnreamn'ssrouon To cnonenwfnunn, or

n anaaggmesmm.

sp e cification cf ietteisjatent; 191

Application filed November 5,

L910; aim-m. 590,867.

To all whom it may 0mm;

Be it known that I, WALTER F. STIMPSUN,

the county of Wayne reiiding at Detroit, in

have invented cer- Michigan,

putin -Scales, of which the following is a speci cation, reference being had therein to the accompanymg drawings.

The invention relates to computing scales of the automatic and semi-automatic type, more particularly designed for use as platform or counter scales.

It is the object of the invention, first, to obtain a simpler construction of operating mechanism, second, one in which symmetry in outline may be maintained same time an advantageous arrangement of the mechanical elements obtained.

With these objects in view, consists in the construction as set forth.

In the drawings,.Figure lis a sectional perspective view of the scale; and Fig. 2 1s a section taken on linear-m of Fig. 1,

the invention hereinafter My invention is applicable to computing the weighing operation automatic. In addition to the automatic weighing mechanism there is usually provided a tare beam with a shiftable poise and a counterpoise having This tare beam is also connected with the platform levers to be operated simultaneously with the movement of the index.

To obtain simplicity in construction, I have devised an 0 erating mechanism in which a single stee yard rod forms a common actuating-connection for the tare beam and the automatic weighing mechanism; I have also designed the parts with reference to each other so as to produce asymmetrical arrangement and a sensitive weighing mechanism.

In detail A is the platform'frame containing any suitable construction of plat- (not shown), B is a frame rising from the platform frame and surmounted by the fan shaped indicatin section C herein shown as a computing 0 art. This ,,index D, I is a pulley or segment and J and at the frame and chart are preferably of sym metrical form and are centrally arranged with respect to the platform.

- D is the index hand for the chart which is'fulcrumed at E in the center line of the frame, and F is the tare beam-also fulcrumed in the center line of the frame on bearings G and arranged above the fulcrum E.

H is the pendulum weight attached to the a flexible band engaging said ulley or segment and forming an operating connection for the pendulum.

K is a lever to which the band J is attached, said lever being fulcrumed at L upon the frame B, and M is a steelyard rod forming a common actuating connection for the lever K and tare beam F extending downward to the platform levers.

It is desirable to avoid making the .pen-

dulum and its operating mechanism too small in size, -and on the other hand, to avoid unnecessarily increasing the dimensions of the scale frame. I have secured advantageous arrangement of the parts by extending theframe B laterally to e full width or even a greater width than the platform at that point in the vertical height where the lever K isfulcrumed. This permits of using a longer lever and also of increasing the multiplication thereof so that the diameter of the pulley E may be correspondingly enlarged and the required multiplication between the platform levers and index maintained. This arrangement also permits of using one steelyard rod M for operating both the lever K and the tare beam F. His only necessary that this increased width shouldbe at one point, and to produce a pleasing and symmetrical design of frame, the portion B is in the form of an annulus of oval or elliptical contour. Thus, the fulcrumL for the lever K- may be arranged at the outer end of the oval frame while the balance weight K for said lever may be concealed within the frame, the section of which is preferably of U shape. The opposite-end of the oval which for symmetry extends equally from the center line, is preferably employed for supporting a guide. arm N for the counter oise O of the tare beam F. Thus, I obtain-a frame that has both mechanical utility and symmetry in appearance, while by making the vertical on said frame,

- counterp axis of the ellipse small relative to, the lateral axis, the frame is quickly reduced in width to suitable dimensions for supporting the chart. v

The steelyard rod M is connected at its' upper end by the hook M to a pivotal link M which engages the knife edge PIVPtS M of the beam F. There is also provided a second pivotal link P for connecting the rod with the knife edgepivotP on the beam-K." This link. permitting slight" differential lateral movement of the pivots P and M3. As shown it is connected to the hook P arranged centrally of the bifurcation P in the rod M.

The scales of the character. above described are usually provided with dash-pots for checking the oscillation of the index.

have conveniently disposed of this dashpot by arranging it within the counterpoise of the tare beam, and in operation it per: forms in addition to its function of a retarding device, that of the check 'for limiting the oscillation of the counterpoise.

In detail Q is the cylinder of the dash pot which is mounted upon the bracket arm and engages a recess in the base 0 of the counterpoise O.

the dashpot R is the piston engaging which has a shank R connecting it to the oise' preferably near the upper end thereof. This shank is also used for adjust ing the restriction of the fluid passage for the dash-pot which is accomphshed by a rotatable rod, the milled head R being provided for this purpose. The arrangement is such that the counterpoise can oscillate vertically, being merely retarded inits action by the dash-pot, and also held from swinging laterall but without interfering with the balance. Furthermore, the counterweight may be used with detachable weights which are supported thereon without interference with the dash-pot.

What I claim as my invention is:

1. The combination of a platform, a frame extending thereabove, an indicating section pendulum weight for said index, a tare beam, said pendulum weight and tare beam being both fulcrumed centrally of said frame the one above the other, an intermediate lever operatively connected with said pendulum weight, and a common steelyard rod connected to said intermediate lever and tare beam and operatively connected with the platform mechanism 2. The combination of a platform, a frame extending thereabove having an indicating section at its upper end and a laterally en'- larged portion below said section, a tare beam and an index having a pendulum weight bot-h fulcrumed centrally of said frame. and between said section and the laterally enlarged portion, an intermediate an index for said section, a

lever for operating said index and pendulum weight fulcrumed upon said laterally enlargedportion, and a steelyardrod connecting the platorm mechanism with said intermediate lever and tare beam.

3. The combination of a platform, a frame extending upward from said platform having an indicating section at its upper end and a laterally enlarged portion below said section, a tare beam fulcrumed centrally of said frame intermediate said chart and laterally enlarged portion, an index fulcrumed below said tare beam and having a pendulum weight operatively associated therewith,

.the chart, a lever fulcrumed an intermediate lever connecte index and pendulum weight and fulcrumed at one side of said laterally enlarged portion of the frame, a steelyard rod for operating said intermediate lever and said tare beam operably connected to said platform, a counterpoise for said tare beam, and a guide for said counterpoise on the opposite side of said laterally enlarged portion.

4. The combination of a platform, a frame extending upward therefrom h dicating section at its upper end, a laterally enlarged oval annular portion below said chart, a tare beam and an index for said section fulcrumed centrally of said frame intermediate the oval annular portion and at one side of said enlarged annular portion and operatively connected at its opposite end to said index, a steelyard rod operatively connected to the platform, said lever and said tare beam, a counterpoise for said tare beam, and a guide for said counterpoise connected to the opposite side of said annular portion.

In a scale, the combination with a beam, of acounterpoise therefor, and a dash-pot located within said counterpoise.

6. In a scale, the combination with a beam, of a. counterpoise therefor having a recess, a dash-pot located within the recess of said d with said 0 counterpoise, and means for adjusting said dash-pot extending upward in said counterpoise.

7. In a scale, the combination with abeam, of a counterpoise therefor having a recess, a dash-pot located within the recess in said counterpoise and having one element attached thereto, and a stationary support for the other element of said dash-pot forming 'a guide for said counterpoise.

8. In a scale, the combination of a platform, a frame extending thereabove having an indicating section at its upper end and a lateral enlarged portion below said section, a tare beam, and an index having a pendulum weight, both fulcrumed on sai ieneath said section,

d frame c'rumed upon one rod connected-to the tare beam and intermediate lever between the fulcrums thereof and t0 the platform mechanism.

9.- In a scale, the combination of a platform, a frame extending there-above having an indicating section at its upper end and symmetrical lateral enlargements belo'w said section, a tare beam and an index having a pendulum weight, both fulcrumed on said frame beneath said section, an in- "termediate lever for operating said index and pendulum weight, said lever bein fulof .said lateral en argementsand to one side of the tare beam ful- Ooptu o! patent in, be obtained:

crum, a steelyard rod secured to the tare beam and intermediate lever between the fulcrums thereof and connected to the platform mechanism, a counterpoise for said tare beam, and a guide for said counterpoise carried by the other of said lateral enlargements.

In testimony whereof I aflix my signature in presence of two witnesses.

WALTER F. STIMPSON.

Witnesses J AMES P. BARRY, AUBREY PULLEYBLANK.

five cents e'aoh,'by addressing the Commissioner 0:! Tammi 

